Electric curling-iron.



Nm 850,904. PATENTBD APR. 23, 1907.

J. L. BURGARD.

ELECTRIC CURLING IRON.

APPLICATION FILED APR'.5,1906.A

2 SHEETS-SHEET L.

PATENTED APR. 23, 1907.

J. L. BURGARD. ELECTRIC OURLING IRON.

APPLICATION FILED APR.5,1906.

UNITED STATES PATENT OEEICE.h

JACOB L, BUEGARD, OE CHICAGO, ILLINOIS, ASSIGNOE oE-o'NE-IIALE To HERMAN BOLLIN, or CHICAGO, ILLINOIS.- t

ELECTRIC CUFILINGPIFION.l

Specification of Letters Patent.

Patented April 23, 19o?.

\ Application led April 5.1906. Serial No. 310,135.

To all wiz/m, it Inf/.Ly concern.-

Be it known that I, JACOB L. BURGARD, a citizen of the United States, residing at Chicago, in the county of- Cook and State of Illinois, have invented a certain new and useful Improvement in Electric Curling-Irons, of which the following is a specification.

My invention relates to curling-irons, and particularly to such devices when heated by electricity. y

The object of my invention is to provide means for continuously heating the working parts of a curling-iron by a continuouslypassing electric current, so that it is not necessary to waste any time putting the instru- Inent in an electric or other sort of heatingstove, as has heretofore been required.

My invention consists in mechanism capable of carrying out the foregoing obj ect, which can be easily and cheaply made, which is eiiicient in operation, and is not readily liable to get out of order.

In its preferred form it consists in a novel construction by which I am able to mount in each jaw of the curling-iron proper a resistance-coil, this in combination with means for continuously heating said resistancecoils, sothat they heat the operating-jaws of the iron to a sufficient heat for the purpose for which they are intended without getting them too hot.

My invention further consists in the details of construction which will be hereafter more fully described and claimed as the specification proceeds.

Referring to vthe drawings, Figure 1 is an exterior front elevation of a curling-iron, illustrating my invention in its preferred form, the jaws being open. Fig, 2 is a side view of the same in the direction of the arrow 2 of Fig, 1, the jaws being closed. Fig. 3 is a vertical sectional enlarged detail view of the jaw 10, illustrating the interior construction. Fig. 4 is a plan view on line 4 4 of Figs. 1, 3, 6, and 7. Fig. 5 is a partial sectional detail view taken on line 5 5 of Figs. 1, 6, and 7. Fig. 6 is a vertical partiallysectional view on the irregular line 6 6 of Fig. 5. Fig. 7 is a vertical central sectional detail view on line 7 7 in Fig. 5. Fig. 8 is a horizontal sectional detail view of the crescent-shaped jaw of the iron, taken on line 8 8 of Fig. 6, turned through an angle of ninety degrees, and is a sectional detail view on line 8 8 of Fig. 9. Fig. 9 is a front sectional detail view taken on the irregular line 9 9 of Fig. 8.

As is well known in the trade, an ordinary curling-iron consists of two heatable jaws 1() and 11, pivoted together at 12, as shown, after the fashion of an ordinary pair of shears or' scissors, the jaw 1() having a handle 13 and the jaw 11 a handle 14, bothhandlesheing on opposite sides of the pivot 1,2 from the jaws. )ne j aw-as, for instance, that illustra-ted in the drawings as 10-is usually circular in cross-section, while the other jaw 11 is crescent-shaped, as shown in Fig.,8, so that the circular jaw 1() rests within thecurved surface 16 of the jaw when th'ey are closed up together, as shown in Fig. 2. In order to provide such a curling-iron with the electrical heating mechanism of my invention, I instal within the circular jaw 10 an insulating-cylinder 20, preferably of soapstone. In the interior of the hollow cylinder 30 I place a resistance-coil 21, as best shown in Fig. 3, having its lower end connected to an insulated terminal wire 23, While its upper end passes outside the soapstone cylinder 20 and is connected to a resistance-coil 25, wound around the outside of the soapstone cylinder, the lower end of said coil terminating at the b ottom of the cylindrical portion 10 in an insulated torminal wire 28, as shown. The outsides of the soapstone cylinder 20 and the exterior of the resistance-coil wires 25 are covered with insulating material 30, which fills the space between the wire-wound soap-stone cylinder and the exterior metal covering 31 of the jaw 10. As is best shown in. Figs. 5 and 7, this circular j aw 10 carries the central plate 35 (between forks 51 and 57) of the joint of the curling-iron, to which is rigidly connected, by any suitable means, the handle 13, heretofore described. Through this plate 35 I provide a passage-way 36, connecting with a similar passage-way 37, extending entirely through the length of the handle 13. Through this passage-way 36 37 I threadthe two terminal insulated wires 23 and 28, heretofore described, so that, as shown in Fig. l., they extend below the lower end of the handle 13.

In order to provide a resistance-coil in the crescent-shaped jaw 11 of the device, which is not ordinarily of suiiicient thickness to allow for a cylindrical coil, such as that applied to the jaw 10, heretofore described, I provide IfO two elongated strips, rods, or bars of mica or other insulating material 40 and 41, placed at an angle with reference to each other, as best shown in Fig. 8, said two strips being mounted within the metal inclosing surface of the jaw, as shown in Fig. S. Around the strip 40, heretofore described, I wind a coil or' resistance heating-wire 42, having its lower end terminating in an insulated wire 43 and its upper end connected by a wire 44 to a similar coil of wire 45, wound around the bar 41, said last-mentioned bar terminating at its lower end in an `insulated wire 46. The two wire-w ound insulating-bars thus described are embedded in insulation 47, which fills the spaces between said parts and the metallic outer cover 49 of the jaw 11, as shown in Fig. 8, thereby perfectly insulating the coils and resistance-Wire on the bars 40 and 41 from each outside metal surface of the jaw. Thelwire 43, heretofore described, passes 'from the coil 42, through a passage-way 50 in one fork 51 of the joint of the curling-iron, into a common passage-way 54, where it meets and is preferably twisted with the wire 46, which passes through a passageway 56 in the opposite fork 57 of the joint of the curling-iron into said common passage-way 54. The two wires 43 and 46 thence pass through the passage-way 54 out of the lower end or' the handle 14, as shown. One wire from each handle 13 and 14-as, for instance, wires 28 and 43-is connected to a wire from the opposite handle in a common connecting portion 60, thereby putting the heating-coils to which they are connected in series. The two opposite wires from each handlekas, for instance, the Wire 23 and the wire 46-are preferably twisted together in the portion 61 `and conducted away to suitable terminals (with which `each wire may be connected) capable of supplying the curling-iron with electrical energy.

` In the operation of the device the operator by a suitable switch located beyond the ligure turns an electric current into one of the terminal connected wires-as, for instance, the wire 23. The current passes through that wire and the handle 13 and the oint of the curling-iron into the interior resistancecoil 21, thence into the exterior resistance coil 25 and back to the wire 48, on which it passes through the handle 13 and across the comiecting-wire (30, heretofore described, onto the `wire portion 43, on which it passes through the handle 14, again through the joint of the curling-iron, onto the resistancowire 42, over which it travels to the co11nect- The result of this passing without becoming overheated, so that it is.l

not necessary to stop and insert the iron in some sort of a heating device, as is necessary both where either gas-llame or previous electrical devices are used.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is-

1. In a curling-iron, the combination of a pair of pivoted jaws each having a handle at tached thereto, a resistance-co1l inside each working jaw of the iron and insulated therefrom, electrical connection between one terminal of each resistance-coil and wires connecting the opposite termi-nal of each resistance-coil to a source of electrical energy.

2. In a curling-iron, the combination of a pair of pivoted jaws each having a handle attached thereto, a resistance-coil inside each working jaw of the iron and insulated therefrom; insulated terminal wires leading from the resistance-coil in each jaw through passage-ways in pivoted joint and handle portions attached to each jaw, electrical cone .nections between one wire from each handle and means 'for connecting the opposite wire from each handle to a source of electrical energy.

3. In a curling-iron a working jaw comprising a hollow tube of insulating material, a resistance-wire extending through said tube, around one end and back to the starting-point, insulating material surrounding IOO the whole and a thin metal covering about.

the insulation the same forming the exterior surface of one jaw of' the iron.

4. In a curling-iron a crescent-shaped jaw;

comprising two rectangular strips of insulating material placed at an angle to each other, resistance-wire starting at one end of one of said strips, wound around it, to its opposite end thence across to the opposite strip and thence around second strip back to its opposite end, insulating material entirely surrounding said strips and resistance-wire and a crescent-shaped metal covering inclosing the whole forming the. exterior surface ol a l l i crescent-shaped jaw as described.

In witness whereof I have hereunto subscribed my name 1n the presence of two witnesses.

JACOB L. BURGARD.

l/Vitnesses: HERMAN BOLLIN,

DWIGHT B. CHEEVER.

IIO 

